where jellyfin stores users

[fmert2]

is jellyfin storing users to /var/lib/jellyfin/data/jellyfin.db
/var/lib/jellyfin/data/jellyfin.db-shm
/var/lib/jellyfin/data/jellyfin.db-wa

or some where else
can ı hard code user setings password etc somewhere

[TheDreadPirate]

/var/lib/jellyfin/data/jellyfin.db is where the user accounts are stored. The -shm and -wa files are the working/temp files for the database.

[fmert2]

is there any option ı can move user data some where else ?

[TheDreadPirate]

Negatory. Not without changing the server code.

If you want user authentication to be separate, there are LDAP plugins you can use.